The usual adult dose of Imdur is 30-60 mg orally once a day. Follow your doctor's dosing instructions very carefully.

STORAGE

Store this medicine at room temperature away from moisture, heat, and light. Keep the bottle tightly closed when not in use.

Do not use Imdur if you are taking sildenafil (Viagra, Revatio). A dangerous drug interaction could occur, leading to serious side effects. You should not use Imdur if you are allergic to isosorbide mononitrate, isosorbide dinitrate, (Isordil, Dilatrate, Isochron), or nitroglycerin, or if you have early signs of a heart attack (chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling).

To make sure you can safely take Imdur, tell your doctor if you have any of these other conditions:

It is not known whether Imdur will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication. It is not known whether isosorbide mononitrate passes into breast milk or if it could harm a nursing baby. Do not use Imdur without telling your doctor if you are breast-feeding a baby.